Economist Dr Chris Wilkins leads Massey University's illegal drug research team. He recently wrote a New Zealand Medical Journal editorial promoting the idea of using registered clubs to regulate recreational cannabis use. In this interview with Wallace Chapman on Radio New Zealand's Sunday Morning he discusses the available empirical evidence and the advantages and disadvantages of a range of policy options for the use of marijuana and other drugs in New Zealand. Aspects covered include drug quality, the economics of illegal markets and their regulation, the politics involved, NZ's history with synthetic cannabis, taxation and medical and health policy. He sees twelve different policy regimes availabe and does not consider this is a simple binary choice between legaliisation or decriminalisation and the current legal regime. The drug club proposal is also explained.